<style>
.hongse{
	color:red;
}
.f30{
	font-size:30px;
}
.bgyellow{
	background:yellow;
}
#sige{
	color:purple;
	font-size:50px;
}
</style>
<p class="hongse f30 bgyellow">133434</p>
<h1 class="hongse bgyellow">1</h1>
<h2>2</h2>
<h3 class="hongse">3</h3>
<h4 id="sige">4</h4>
<h5 class="hongse">5</h5>
<h6 class="f30">6</h6>








